1 8 NEW YORK STATE MUSEUM 



There are several surface pits and a trench to the west of the 

 mine. 



The mill stands on the steep hillside facing north, so that gravity 

 methods of ore handling could be employed. The top floor carries 

 the hoisting engine as well as the ore bin, into which the ore was 

 directly raised from the shaft. On the floor below are two rows 

 s>f crushers which feed into burrstone grinders, and the boilers 

 for the single tube-dryer. On the lowest floor are the main boilers, 

 driving engines, mine pumps and packing room. The difficulty in 

 securing abundant water forced the company to resort to the dry 

 method of concentration. The details of this method are not 

 available as the writer was informed that the process was a secret 

 one. The mill concentrates were hauled to Crown Point Center 

 and there refined in a finishing mill. The fuel used was coal 

 hauled from Crown Point station. The following grades were 

 prepared : 



Mill concentrates: no. I, no. 2, no. 3. 



Finishing mill products: flake — no. 1, no. 2, no. 3; dust — no. I, 

 no. 2. 



A sample of concentrate was secured and the following measure- 

 ments were made upon the size of the graphite flakes. These were 

 secured by means of a microscope especially arranged for the work. 



The average diameter is based on ten measurements. It is not 

 known what grade this sample represents. 



Average diameter 91 x .65 mm 



Maximum diameter 1.43 



Minimum diameter .39 



The mill is said to have had a capacity of 30 to 50 tons a day. 1 



Geology. The geology is very similar to that at the Columbia 

 Graphite property (see below). A representative section beginning 

 on the north side of the road and running south would be as 

 follows : 



1 Pink granite, cut by frequent stringers and dikes of peg- 

 matite and occasionally holding inclusions of the sedimentary 

 rocks. 



2 The swamp, referred to above, probably is a limestone 

 valley, with beds of uncertain thickness, not necessarily un- 

 derlying the full width of the depression. A small patch 

 of limestone was found near the base of the hill. 



Bastin, E. S., Mineral Resources. U. S. G. S., 1914 2:208. 



